CODEWITHSUNDEEP
javaandroidretrofit
Forkmohit
Forkmohit

Reputation: 753

Retrofit :Unable to create adapter

I am using retrofit for HTTP calls. But app throws following exception :

02-21 14:07:40.527 21157-21157/com.popularmovies E/AndroidRuntime: FATAL EXCEPTION: main Process: com.popularmovies, PID: 21157 java.lang.IllegalArgumentException: Unable to create call adapter for class com.entity.PopularMovies for method MovieDbAPI.getPopularMovies at retrofit.Utils.methodError(Utils.java:177) at retrofit.MethodHandler.createCallAdapter(MethodHandler.java:47) at retrofit.MethodHandler.create(MethodHandler.java:26) at retrofit.Retrofit.loadMethodHandler(Retrofit.java:151) at retrofit.Retrofit$1.invoke(Retrofit.java:132) at $Proxy1.getPopularMovies(Native Method) at com.service.MovieServiceImpl.getPopularMovies(MovieServiceImpl.java:27) at com.popularmovies.MainActivityFragment.getPopularMovies(MainActivityFragment.java:49) at com.popularmovies.MainActivityFragment.onClick(MainActivityFragment.java:77) at android.view.View.performClick(View.java:4444) at android.view.View$PerformClick.run(View.java:18457) at android.os.Handler.handleCallback(Handler.java:733) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5113) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:609) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.IllegalArgumentException: Could not locate call adapter for class com.entity.PopularMovies. Tried: * retrofit.ExecutorCallAdapterFactory at retrofit.Retrofit.nextCallAdapter(Retrofit.java:207) at retrofit.Retrofit.callAdapter(Retrofit.java:175) at retrofit.MethodHandler.createCallAdapter(MethodHandler.java:45) ... 18 more

public class MovieServiceImpl implements MovieService{

private static String baseURL =  "http://api.themoviedb.org/3/discover/movie/";

private static String sortBy = "popularity.desc";
private static String key ="*****";

@Override
public PopularMovies  getPopularMovies(){

  Retrofit retrofit = Util.getRetrofit(baseURL);

  MovieDbAPI movieAPI = retrofit.create(MovieDbAPI.class);

  PopularMovies popularMovies =  movieAPI.getPopularMovies( sortBy, key );

  return popularMovies;
}
}

public class Util {


public static Retrofit getRetrofit(String baseURL){

    Retrofit retrofit = new Retrofit.Builder()
            .baseUrl(baseURL)
            .addConverterFactory(GsonConverterFactory.create())
            .build();


    return retrofit;
}


}



 public interface MovieDbAPI {

 @GET
 PopularMovies getPopularMovies(@Query("sort_by") String sort_by,   @Query("api_key") String key);

}

Upvotes: 0

Views: 200

Answers (1)

Mussa
Mussa

Reputation: 1499

Try this:

@GET
Call<PopularMovies> getPopularMovies(@Query("sort_by") String sort_by, @Query("api_key") String key);

and when you call getPopularMovies method make it this way:

Synchronous Request

Call<PopularMovies> call = movieAPI.getPopularMovies(sortBy, key);
PopularMovies popularMovies = call.execute();

or Asynchronous Request

Call<PopularMovies> call = movieAPI.getPopularMovies(sortBy, key);
call.enqueue(new Callback<PopularMovies>() {
        @Override
        public void onResponse(Response<PopularMovies> response) {

        }

        @Override
        public void onFailure(Throwable t) {
        }
    });

Upvotes: 1

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